double base
倍大提琴：倍大提琴是西洋弦乐器中的一种
常用释义
英式发音
美式发音
基本释义
- 倍大提琴：倍大提琴是西洋弦乐器中的一种，也是现代交响乐队中弦乐组中发音最低的乐器。
例句
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1·Students' mathematics "double bases" and mathematics cognition base are not solid.我国学生数学双基与数学认知基础并不厚实。
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2·The Quantitative Analysis of Project Objective Flexible Control Based on Double Base Points;建设工程项目目标的控制是贯穿项目的整个建设过程。
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3·The heptane compound has a primary purpose as a plasticizer for double base propellant systems.化合物庚烷的主要用途是作为双基推进剂的增塑剂。
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4·This is a comment with 58 references on the plateau combustion mechanism of the double base propellants.这是一篇关于双基推进剂平台燃烧机理的评论，参考文献58篇。
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5·The effect of carbon black on burning properties of modified nitramine double base propellant was detailed in this paper.分析了在硝胺改性双基推进剂中炭黑对其燃烧性能的影响。
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6·The high temperature reaction centre above the burning surface of the double base propellants and its variety regulation are found.实验发现了双基推进剂燃烧表面上方高温反应中心的存在和变化规律。
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7·The grain distribution and thermal decomposition characteristic of RDX in RDX modified double base spheric small size propellants are discussed.讨论了改性双基球形小粒药中rdx颗粒的分布和RDX热分解的特点，提出了RD X改性双基球形小粒药的燃烧机理。
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8·The manufacturing technology of seismic charge with high detonation velocity containing single base propellant and double base propellant is researched.研制含单基药、双基药的高爆速震源药柱+，并对其制造工艺进行了研究。
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9·It is indicated by the tests that provided a suitable binder is selected, the design requirements can be met by assembling double base propellant chunks.实验结果表明，只要选择适当的黏结剂，通过对双基药块进行黏合组型可满足设计要求。
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10·The combustion catalyst adopted by ordinary double base propellant can adjust the burning rate. It's necessary to study further on the combustion mechanism.该推进剂具有低特征信号、低易损性等特点，用一般双基药所采用的燃烧催化剂可调节燃速，深入研究其燃烧机理很有意义。